18741220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 41832000

約数和(自身を除く): 23090780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 331, 380, 596, 662, 745, 1324, 1490, 1655, 2831, 2980, 3310, 5662, 6289, 6620, 11324, 12578, 14155, 25156, 28310, 31445, 49319, 56620, 62890, 98638, 125780, 197276, 246595, 493190, 937061, 986380, 1874122, 3748244, 4685305, 9370610, 18741220]

約数ペア:

[(1, 18741220), (2, 9370610), (4, 4685305), (5, 3748244), (10, 1874122), (19, 986380), (20, 937061), (38, 493190), (76, 246595), (95, 197276), (149, 125780), (190, 98638), (298, 62890), (331, 56620), (380, 49319), (596, 31445), (662, 28310), (745, 25156), (1324, 14155), (1490, 12578), (1655, 11324), (2831, 6620), (2980, 6289), (3310, 5662)]